Apparatus for manufacturing seamless tubing.



No. 742,200. A PATENT-ED 001'. 27, 1903. J. H. KING & B. WOLFE.APPARATUS FOR MANUFACTURING SEAMLESS TUBING.

APPLICATION FILED DEC. 26, 1901. y

no 10mm. I a snnmsnnnr 1.

No. 742,200. PATENTED OCT. 27, 1903 Y J. H. KING & B. M.'WOL PB.

APPARATUS FOR MANUFACTURING SEAMLESS TUBING.

APPLIGATION FILED D30. 26, 1901.

no MODEL. a SHEETS-SHEET z, A?

I w//////,///////////////m mZnas-scv: A

TN! uonms ans co, Pnmoumu. WASHINGTON u. c

1%. 142,200. BATENTED 001 27, 1903. J. 1%.. KING & M. WQLBE'. APPARATUS;12011 mnnmemumm SEAMLESS TUBING.

APBMGJATIQK: FILED DEC. 26-, 1901. 1w MODEL. a SHEETS-SHEET a.

iwentory:

"m: mums PETERS co movmmdzv wAsHwsmN. n. c.

- UNITED STATES i atented October 27, 1903.

PATENT OFFICE- JOHN H. KING AND EDWARD M. IVOLFE, OF BEAVERFALLS,PENNSYL- VANIA, ASSIGNORS OF ONE-THIRD TO GEORGE H. BLAXTER, OF PITTS-BURG, PENNSYLVANIA.

APPARATUS FOR MANUFACTURING SEAMLESS TUBING.

SPECIFICATION forming 108.143 Of Letters Patent No. 742,200, datedOctober 27, 1903.

Application filed December 26, 1901. Serial No. 87,361. (No model.) I

T at whom it may concern.-

Be it known that we,- JOHN H. KING and EDWARD M. WOLFE, citizens of theUnited States, residing at Beaverfalls, in the county showing the meansfor manipulating the bar.

Fig. 3 is a similar view showing the feeding portion of the plant to theleft of the rollhousing indicated by Fig. 1. Fig. disa plan of Fig. 3indicatedby the line IV IV'of Fig.

3. Fig. 5 is a cross-sectional view on the line V V of Fig. 2. Fig. 6 isacross-sectional detail View, on an enlarged scale, taken on the line VIVI of Fig. 2. Fig. 6 'is a similar view showing the upper grooved rollerand arm partiallyraised,illustrating the process of discharging thetube. Fig. 7 is a similar view showing the upper grooved rollerj andarmraised to the limit of their travel. Fig. 8 is an end View of thetable looking toward the rolls, indicated by thelineVIIIVIII of Fig. 2'.

Fig. 9 is a cross-sectionalview indicated by the line IX IX of Fig. 2.Fig. 10 is a similar view indicated by the line X X of Fig. 2. Fig. 11is a face view of the cross-head, indicated by the line XI XI of Fig. 1.Fig. 12 is a side view of the cross-head. Fig. 13 isa face view thereofsimilar to Fig. 11, but showing the limiting-stop raised out of the way.Fig. 14 is a cross-sectional view on the line XIV XIV of FigQll. Fig. 15is a vertical sectional view indicated by the line XV XV of Fig. 11."Fig. 16 is a view of theextractor, partially in section. Fig. 17 is ahorizontal plan of the lower feed-rollers and'driving-gearing therefor,indicated by the line XVII XVII of Fig. 16.

Our invention relates to the manufacture of seamless tubing from apreviously-prepared hollow billet; and it consists in means for forcingthe said hollow billet over a ball between rolls, thenoverguidingProlls,to-'

gether with means for supporting the mandrel,-releasing the upperguiding-rolls, ma-

nipulating the bar, and other details of con-- struction, which will bemore fully hereinafter set forth.

Referring now to the drawings, 2 is a table in advance of the grooves ofthe mill 3, i1pon which table are mounted trough-sections 4,

provided with grooves in the upper portion,v

through which the blank is forced by a head 5 and a piston-rod mountedin a fiuid ac'tuated cylinder 6, which cylinder is likewise supportedupon the table 2.

Immediately in .advance of the usual grooved rolls 7 7 of the mill-isset a bellmouthed guide 8, adapted to receive the blank and to maintainit in cylindrical form and to introduce it tothe rolls 7, whichbell-mouthed guide will also prevent any buckling or distorting of thetube near to the rolls, while also tending to reduce any irregularitiestherein before ,entering the roll-pass. Beyond the rolls is mounted atable 9, upon the forward end of which isa short section of trough 4,

adapted to receive the ball and to deliver it upon the endof theforwardly-traveling mandrel. As the mandrel is drawn backwardly afterthe rolling operation, the tube being stripped therefrom, the detachableball is released by the' tube and will remain in the trough 4'. Uponadvancing the mandrel 11 for the nextoperation the ball is picked up bythe point of the mandrel, being adj usted,

if necessary, by the workman. -In the table is rotatably mounted,preferably upon friction-rolls, as indicated in Fig. 10, a series ofgrooved rollers 10, adapted to receive the tube in process as itadvances over the mandrel 11 and to support it in alinement therewith,while at suitable locations above the grooved rolls 10 are mountedsimilarly-groovedroll-.

ers 12 for the like purpose of maintaining the tube in alinement byproviding an upper bearing at different pointsalong the length of thetable. These upper rolls 12 are preferably mounted in such a manner thatthey may be thrown up out of engagement with the tube, and for thispurpose they are mounted upon the inner ends of supporting-studs 13,which studs are mounted in upper ends of gudgeons 14, keyed upon andcarried by a common rotating shaft 15, supported in bearings 16,extending upwardly from the main frame of the table 9. Below the groovedwheels 12 and at any suitable position upon the shaft 15 or secured toor made integral with the gudgeons 14 are the downwardly and inwardlyextending arms 17, adapted to be actuated by the shaft 15, so that whenthe wheels 12 are thrown up, as indicated in Figs. 6and 7, such armsmoving in conformity with the wheels 12 will lift the tube out of thegrooves of the rollers and will discharge it by gravity upon anysuitabletable or platform at one side, as alsoindicated in Fig. 6.

The shaft 15 is partially rotated from one end of the table 9 by meansof a crank 18, pitman 19, and treadle-lever 20, the weight of therollers 12 and arm 17 returning it to normal position after pressureupon the treadle is released, while further downward movement is limitedby the ends of the arms hearing upon the cross-frame of the table 21, asclearly shown in Fig. 6.

The pressure-mandrel 11 is provided at its forward end with the usualball 22, mounted between the rolls 7 in proper position to form thetube, the rear end of the mandrel resting upon the grooved rollers 23 ofthe mandrelextractor, (indicated at A in Figs. 1 and 2.) In the normalposition the mandrel is sup ported at its forward end upon anupwardlyextending fork or trunnion 24, pivotally mounted upon shaft25,journaled in the frame 9, to which shaft 25 is secured a lever 26,which rests upwardly in the normal position of the support, as shown inFig. 2, against a projecting pin 27,as shown in Fig. 10,thuspreventingthe support from tipping forwardly. During the period of rest themandrel 11 bears downwardly upon such support, maintaining it in itsnormal upright position until the advancing tube comes into contact withit or until the mandrel 11 is fed backwardly, when the support will, byreason of the weight of arm 26, fall out of the way, thus leavingclearance for the advancing tube. The mandrel 11 is manipulated eitherforwardly or back by means of the mandrel-extractor, (indicated at A,)but such apparatus being old does not form any part of the presentinvention. In this device the mandrel is fed forward or back bydepressing one or the other of the grooved rollers 28 so as to grip themandrel against one or the other of grooved rolls 23 (at the same timethrowing the opposite roll 28 upwardly) by actuating thedownwardlyextending lever 29 through pitman 30 by means of either theupright lever 31 or the treadle 32. The lower set of rollers 23 aredriven forward and back by suitable gearing (indicated by numeral 49,Fig. 17) from a common shaft 50, provided, if desired, with any suitableclutch mechanism. By this construction the mandrel is fed in onedirection by lowering the rollers 28 to hold it against one of therollers 23 and in the other direction by the same operation of the rollson the other side through lever 29, and such construction constitutesthe means for moving the mandrel referred to in the claims.

Immediately back of the mandrel-extracting apparatus is located avertical yoke 33, connected by tension-rods 34 with the housing of themill 3 against backward pressure of the mandrel, by which means the yokeis thus rigidly held and provides a positive and immovable backstop.Pivotally mounted upon the face of the yoke 33 at 35 is a gate 36,provided with an extended arm 37, by which it may be raised out ofengagement and in which gate is mounted, by means of a screwthread,thebackwardly-extending bolt 38, and forming a part thereof is the stop 39,adapted to limit the backward travel of the mandrel 11, and thusprovides an accurate adjustment for the ball with relation to the rolls.The forward end of this stop is tapered, as shown, having a rounded tip,and the lower edge of the gate 36 is beveled off, as indicated at 40, sothat if in lifting the gate the mandrel should be forced against it oragainst the tip it will slide off the gate or tip without damaging itand will also assist in lifting the gate. The i stop is capable of veryaccurate adjustment in the gate by rotating it upon its screwthreads,and it is secured in position by a set-screw 41, bearing upon a key 42,the inner face of which is preferably threaded to correspond to thethreads of the screw 38. In its normal position the stop is lowered,thus maintaining the bar and ball 22 in proper position for forming thetube, after which operation the gate 36 is thrown up out of the way, asindicated in Fig. 13, a slot 43 being provided in the yoke in such aposition that the mandrel will travel backwardly through the yoke untilit comes into contact with a buifer-blook 44, which will arrest itsbackward movement. Such buffer-block is mountedin a suitable bearing 45at the proper distance back of the yoke, which bearing is connected withthe yoke by rods 46, thus rigidly holding it against back movement.Between the yoke and the buffer-block, supported in a suitable table 47,are a series of grooved rollers 48, upon which the mandrel will rest andbe carried'in its backward travel.

The operation is as follows: The mandrel having been advanced toitsnormal position with the ball in proper position between the rolls andthe stop having been adjusted the hollow billet is placed in trough 4,and by the piston and head 5 is thrust forward through the bell-mouthedguide 8 and introduced between the rolls 7 and travels forwardly overthe mandrel 11 upon rolls and under rolls 12 until it has been completedfor its full length. The advancing tube will come into contact with thesupport 24 and knock it away from under the mandrel, causing it to falldown out of the way. The gate is then thrown up. The back feeding-rollsof mandrel-extractor A are thrown into gripping contact with themandrel, which then travels back through the tube, said tube coming intocontact with a suitable abutment 52, the ball falling oif in advance ofthe tube upon coming into contact with said tube, and the feed of themandrel continues until it has been drawn clear out of the tube, when itwill come into contact with the bufier-block 44 and stop, leaving thetube free and resting on the rollers 10. The treadle-lever is thendepressed, raising the upper rolls 12 and throwing the tube by arms 17out upon the table. The mandrel isthen fed forward, picking up its ballfrom trough 4, the ball being, if necessary, replaced by hand. Thesupport 24 is readjusted, when the apparatus is again ready for anotheroperation.

The advantages of the foregoing described apparatus will be appreciatedby those familout the operation and made byforcing the pierced billetupon the mandrel, while the mandrel itself is supported and maintainedin alinement and manipulated effectively for the objects in view.

The arrangement, details of construction,

sizes, and other data are within the province of the designing engineer,and we do not desire to be confined to any particular detail as to thesefeatures, but to include them generally as within the scope of thefollowing claims. 1

What we claim is 1. In apparatus for manufacturing tubing, thecombination with a table provided with means for supporting and moving amandrel provided with a detachable ball; of a trough-shaped ball-supportmounted at the end of the table adapted to receive andsupport the balland to deliver it upon the end of the mandrel, substantially as setforth.

2. Apparatus for manufacturing seamless tubing consisting of rolls, amandrel in advance of the rolls provided with a detachable ball, meansfor moving the mandrel, a tubestripping abutment, a series of groovedroll-' ers for supporting the tube in process, upper grooved rollers,means for raising such rollers, and a limiting-stop for the mandrel.

supporting-rollers and upper rollers mounted on a pivoted carrier so asto be capable of tilting, a mandrel provided with a piercing-ball, meansfor moving the mandrel forward and back, a tube-stripping abutment and alimiting-stop for the mandrel.

5. Apparatus for manufacturing seamless tubing consisting of rolls, abell-mouthed guide leading into the rolls, a cylinder and piston adaptedto force the tube in process into the guide, a mandrel beyond the rollsprovided with a ball, means for adjusting the mandrel and ball withrelation to the rolls,

an extractor for the mandrel, a tube-stripping abutment, lowersupporting-rollers, upper rollers with means for raising them out ofengagement with the tube, means fol-discharging the tube, and apermanent stop for the mandrel at the limit of its outward travel.

6. Apparatus for manufacturing seamless tubing consisting of rolls, abell-mouthed guide leading into the rolls, a cylinder and fluid-actuatedpiston mounted upon a table in front of the rolls, a mandrel beyond therolls provided with a ball, a series of grooved rollers adapted tosupport the tube,'upper guiding-rollers, means for raising the upperrollers, means for discharging the tube laterally, an extractor adaptedto advance or withdraw the mandrel, a tube-stripping abutment, a pivotedgate provided with an adjustable limiting-stop, supporting-rollers and apermanent stop forthe mandrel beyond such gate.

7. Apparatus for manufacturing seamless tubing consisting .of rolls, abell-mouthed guide leading into the rolls, a table in front of therolls, a cylinder and fluid-actuated piston mounted thereon adapted toforce the tube in process into the guide, a table beyond the rollsprovided with a ball-support, grooved supporting-rollers mountedtherein, an adj ustable mandrel-support,upper grooved rollers with meansfor raising them,lifting-arms for the tube, a mandrel provided with ade- 8. In apparatus for manufacturing tubing,

a table provided with supporting grooved rollers and upperguiding-rollers with tilting supporting-bearings therefor.

9. In apparatus formanufacturingtubing,

a table pi'ovided with supportinggrooved roll- In testimony whereof weaffix our signaers, upper guiding-rollers with tilting suptux-es inpresence of two Witnesses. porting-bearin s therefor, and liftin arms Afor discharging the tube from the tabTe. gb g gv 3 10. In apparatusformanufacturing tubing,

a yoke provided with a pivoted gate having Vitnesses:

a lower beveled portion, and an adjustable SUSIE WV. ROUZER,limiting-stop set in the gate.

WILLIAM DICKS.

